docstr: test that aubio.dct() is created with expected size 
docstr_tok: ["test","that","aubio.dct","(",")","is","created","with","expected","size"]
code: def test_init(self):
      """test that aubio.dct() is created with expected size"""
      a_dct = aubio.dct()
      self.assertEqual(a_dct.size, 1024)
  
file_path: aubio/python/tests/test_dct.py
imports: import numpy
  from numpy.testing import TestCase, assert_almost_equal
  import aubio
label_desc: Use image node_id 1 for calling the aubio_dct obj's underlying member method code with example usage: obj.test_init() without return types